Printing-press frame



B. D. STEVENS.

PRINTING PRESS FRAME. APPLICATION FILED rzanze, 1921.

Patented Apr. 18, 1922.

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B. D. STEVENS. PRINTING PRESS FRAME.

APPLICATION FILED FEB. 26, I921- Patented Apr. 18, 1922.

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BURT D. STEVENS, OF EVANSTON, ILLINOIS, ASSIGNOR T0 MIEHLE PRINTING PRESS AND MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, "A CORPORATION OF ILLINOIS.

] PRINTING-PRESS FRAME. v

Specification of Letters Patent. Patented Apr, 18, 1922.

Application filed February 26, 1921. Serial No. 448,113.

To all whom it may concern:

Be it known that I, BURT D. STEVENS, a citizen of the United States, residin Evanston, in the county of Cook and tate of Illinois, have invented certain new and useful Improvements in Printing-Press Frames, of which the following is a specification. p

The chief purpose and design of this invention resides in a novel construction and improved assembly of the parts of a printing-press, particularly one of the sliding bed type, the invention pertaining more printing-form bed and its companion impression-cylinder and 1311611 operating mechanisms, whereby the frame will present great rigidity, wherein-the parts w1llproperly maintain permanent alignment and not be subjected to undue or excessive strains- To the accomplishment of these and other desirable ends, the machine comprises a main or underlying base-frame adapted to rest on the floor and. conveniently supplied with outstanding supporting feet.

-Resting on top of such base-frame and secured thereto is afsupplemental or aux-- iliary frame having spaced legs or extensions projecting down into the base-frame with modating the edge or marginal portions of the reciprocatory bed which is operated by appropriate mechanism includinga cranle shaft having suitable bearings in the baseframe.

' To insure the permanent desired relation between the impression-cylinder and such reciprocatorybed, the cylinder is provided with bearings on such'supplemental-frame. A structure of this character, by reason of the bolting of the two frames together at several points, possesses marked rigidity,

"resulting in assured correct alignment of .the severalco'a'cting elements, and because the frame is made in separable parts the desirable embodiment of the invention in practical form has been shown, like referen ce characters being employed for the same parts throughout the several views.

In these drawings; Figure 1 isv a plan view of the machine; Figure 2 is an end elevation of the same; Figure 3 is a lengthwise vertical section; and Figure 4 is a vertical cross-section on line 44L of Figure 3, the parts being viewed in the direction indicated by the arrows.

Referring to such drawings, it will be observed that the appliance includes a 1101-- low, open-top, mainor base frame 11 adapted to rest on the floor, being provided at its four corners with a corresponding numberof outstanding supporting feet 12, 12, whereby the frame has a comparatively wide reach or spread on its sustaining floor.

Bolted at 13 to the top of such mainframe is a supplemental, upstanding frame 14: having an outwardlyextended, horizontal flange 15-resting on and fastened by the bolts or otherwise to the main-frame, and having also a pair of'depending, widelyseparated legs 16 and 17 extending down in the interior, of frame 11 just insideof its side-walls and nearly to the floor, being bolted or otherwise secured at 18, 19 near their lower ends against the inner faces of thickened portions ofthe bottom part of themain or base frame, such lower ends of the legs being connected together, in this particular embodiment of the invention, by an integral bar 21 of angle shape in cross-section forming a part of such supplementary or counterpart frame casting,

The inner faces of such depending legs 16 and 17 and the corresponding upper or registering portions of the top casting 14, of which the legs form integral extensions, are provided with vertical grooves or guide- ;ways 22 and 23 for the accommodation of the marginal portions of an upright recip-s rocatory bed 24 adapted to carry the printingform.

however is partly in and mounted on the 3 7, 37 projecting ,from the upper v and actuated through a rack and gear .bearingsEa 26 and secondary bearings 27,

27 on the interior'of the base-frame 11, the central crank-portion 28 of such shaft being cperatively associated with a shaft '29 "of a pair of bodily traveling gears 31 by a con- "nect'in rod '32 having its opposite ends rockingly connected to the elements 28 s and 29, one only of such gears being shown. These gears mesh. with two, v upright,

spacechstation'ary, racks 33, 33 on theupper frame 14; and with a pair. of registering vertical racks 351:,34; ,on the back of the bed,

. whereby the stroke of the latter is twice the throw ofthe crank.

36 revolubly mounted in bearings infarms "rame 1 f connection with. the sliding bed in the cusm yma n r-m 7 Obviously, therefore, the reciprocating bedhanid the cylinder are directly mounted on the same casting, hence preservingtheir properlrelationto one another at all times.

; It-will be perceived,;also, thatthe entire length of the guideways for thesllding bed .are,on,one casting or frame, hence facilitating the machine work necessary for their production, and assuring theirproper alignnane iinder all conditions, such casting being separable from its supporting base.

The operating mechanism for such bed,

underlying casting or, frame, whereas the remainder of, such actuating mechanism is on the supplemental frame. v 7

Thus itfwill be understood that the machine comprises. two interfitting frames faciliating the casting and machining operations and insuring the permanent align ment, register, and proper position of the several parts which is essential to the proto, and havingextensionsprojecting down into sa d base-frame, sa1d supplementalframe'and extenslons belng provided with upright guideways, a bed slidable in said guideways, and means to reciprocate said bed, substantially as described.

:2. In an upright rec'iprocatory bedprinting-press, the combination of a base-frame, a supplemental-frame mounted on, secured tofa'nd having extensions projecting down into said base-frame, said supplement-alframe and extensions being provided with V to, and having extensions projecting down into said base-frame, a bar connecting said extens ons together, means fastening said A extensions to said base-frame, said supple- Theimpression-cylinder 35 has its shaft" mental frame and extensions having upright guideways, a bed slldable in sald guideways,

and means to reciprocate said bed, substangether near their lower ends, means fasteningsaid extensions to said base-frame, said supplemental-frame and extensions having upright guide'ways, a bed sli'dable in said guideways, and means partly on saidvbaseframe and partly on said supplementalframe toreciprocate said bed, substantially,

as described.

5. In a printing-press, the combination of a hollow baseframe adapted to rest on the floor, a supplemental-frame fastened to said ma n-frame and hav ng opposite vertical extensions project ng down into said mainframe and equipped with registering guideways on their inner faces, a reciprocating printing-form bedslidable in said guideways means to operatesaid bed, and an impression-cylindercooperating with said bed and mounted to revolve in bearings on said supplemental-frame, substantially as described. s 7 7 V 6. In a printing-press, the combination of a hollow'base-fraine'adapted to rest on the floor, a supplemental-frame mounted on top of'said main-frame and. having spaced de- ,pending extensions projecting down into said main-frame, a bar in said main-frame connecting said extensions together, the latter having registering guideways iirtheir inner faces, a reciprocatingprintlng-for n bed slidable 1n said'fgu deways, means to operate said bed, and an impression-cylinder l cooperating withsaid bed and mount-ed to revolve in; bearings "on said supplemental frame, substantially as described."

7 Inaprinting-press', the combination'of" a hollow base-frame adapted to rest on the floor, a supplemental-frame resting on and secured to the top of said base-frame and having spaced depending extensions projecting down into the base-frame and connected together near their lower ends, such extensions having registering guideways in their inner faces, a reclprocatlng printing-form bed slidable in said guideways, an impres- BURT D. STEVENS. 

